A6 AEL thermostat.

[MGaz]

Can anyone tell me the part number for the thermostat on the AEL 5 cylinder A6 Avant quattro (c4) ?

cheers..

[AndyP]

It's the same as the AAN if that's any help, 069 121 113.

[UrS4boy]

Inline 5 Thermostat info (3B, AAR, AAN, ABY, ADU and AEL)

It's the same as the AAN if that's any help, 069 121 113.

Agree. 069121113 is an 87 deg C thermostat that is common to many Audi in-line 5 cylinders including the C4 Inline 5's, i.e. the AAR gas, AAN 20vt and the AEL diesel. Also the same for the 3B, ABY and ADU.

Info about changing the thermostat is available here (click on the link and then the thermostat label (live link) on the right side of the diagram (the other labels are live as well)):

http://members.shaw.ca/speedtek/UrS%20Engine%20Bay%20Device%20Map.html

[MGaz]

thanks guys!

[MGaz]

just ordered one from Motormania, hopefully be in on monday.



I gave them the registration, so hopefully its the right one, and not the V6 version.

Just out of curiosity.. if they order the v6 one and i fitted it, what would happen?

[MGaz]

Ok.. so this is what Motormania got me.

is it the right one? and will it still be ok if not?

[AndyP]

Looks right, does it have 87°C stamped on it? I have a genuine one in the garage, I'll get a pic of it and post it up later.

Why are you replacing it anyway?

[MGaz]

Looks right, does it have 87°C stamped on it? I have a genuine one in the garage, I'll get a pic of it and post it up later.

Why are you replacing it anyway?

I've got no heat in the cabin, and the water temperature gauge in the car never moves . Except for a couple of times on a hot day when I went for a good blast and the needle un expectedly came up and I suddenly found myself getting really toasty .

I suppose the heater matrix could be blocked, but that wouldn't explain the temperature gauge tho.

Tada!

[AndyP]

This is an Audi stat







They do take ages to warm up, that's why I have the stat ready to change, although everybody I've spoken to says this is normal. Try putting a dishwasher cleaner tablet in the coolant systen and leave it in for a week, I've done this on mine and the heater is noticably better. I'm going to give the cooling system a good flush with clean water this weekend and re-fill it with new coolant. Also, do you have digital air con? If so there is a solenoid valave that stops hot coolant going into the matrix when you have it on cold. This could be stuck shut, it's on the passenger side under the plastic scuttle cover.

[MGaz]

well that stat looks nothing like mine..

is it just because its not Audi/OEM? but will it still function the same?

I assume if it fails any time it will still fail 'Open' like the original, rather than fail closed.

Re the air con, yes I have digital climate control, I did wonder if it may have been something to do with that but I think you are the first person to mention it..

So this 'solenoid valve' if its stuck, is it something that can be worked free? or will it need replacing?

its dark now but I'll take a look tomorrow, is it easy enough to see/get at?

[MGaz]

P.S.

I can drive to 60 miles and it still doesn't warm up in the car.

[AndyP]

It's a slightly different design, but fundamentally it's the same.

Not sure about the valve as I've never stripped one. I remember my UrS4 had one that was vacuum powered but the one on the A6 is electric, and yes it's easy to get to. would be worth pulling it out and putting 12v on it to see what happens. It's dark and cold outside or I'd get you a picture!

[twoqu]

At the risk of turning this into the A6 Forum...
You can see the actual temperature of the engine from the climate display assuming that sensor works!
Follow the first steps in the link below. You will need to go to Channel 51 and press the button. The display should then be the engine coolant temperature which should confirm or not whether there is an actual problem.
Also I believe that the 4 pin mfts do not work in the A6 in case you have one fitted.

http://www.youtube.com/watch?v=pF6yO5R7yXE&feature=related

[Wrath]

Used a QH and it last half a year, then I bought a Wahler, never had any problem...

[MGaz]

Used a QH and it last half a year, then I bought a Wahler, never had any problem...

Oh dear , guess I'll be buying a new one again a 6 months then

ANDY P, you sure the dish washer tab thing is safe? Should I use it with the G12 coolant still in there or should I drain it and just use it with plain water? Also, will it get all the crap off the sides of the expansion tank too?